The contribution details a post-processing approach that uses undifferenced dual-frequency pseudorange and carrier phase observations along with IGS precise orbit products, for stand-alone precise geodetic point positioning (static or kinematic) with cm precision. This is possible if one takes advantage of the satellite clock estimates available with the satellite coordinates in the IGS precise orbit products and models systematic effects that cause cm variations in the satellite to user range. This paper will describe the approach, summarize the adjustment procedure, and specify the earth-and space-based models that must be implemented to achieve cm-level positioning in static mode. Furthermore, station tropospheric zenith path delays with cm precision and GPS receiver clock estimates precise to 0.1 ns are also obtained.

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